function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 13],
    ['Echeverría, María L. & Alonso, Sara I. & Comparatore, Viviana M.', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 36],
    ['Info Flora', 32],
    ['Jang, Hyun-Do & Hyun, Chang-Woo & Ryu, Seah & Lee, Sang-Jun', 1],
    ['Jarvis, Charlie', 30],
    ['Jeanmonod, Daniel', 2],
    ['Jeanmonod, Daniel & Schlüssel, André', 2],
    ['Jeanmonod, Daniel & éd.', 1],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 26],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 9],
    ['Nualart, Neus & Soriano, Ignasi & Prieto, David Pérez', 1],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 7],
    ['Roze, Ieva & Rūrāne, Ieva', 18],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=185)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);